Brand Name(s):

• ED-Spaz®§
• Cystospaz®§
• Hyomax®§
• Hyophen®§
• Hyosyne®§
• Levsin®§
• Oscimin®§

WHY is this medicine prescribed?

Hyoscyamine is used to control symptoms associated with disorders of the gastrointestinal (GI) tract. It works by decreasing the motion of the stomach and intestines and the secretion of stomach fluids, including acid. Hyoscyamine is also used in the treatment of bladder spasms, peptic ulcer disease, diverticulitis, colic, irritable bowel syndrome, cystitis, and pancreatitis. Hyoscyamine may also be used to treat certain heart conditions, to control the symptoms of Parkinson's disease and rhinitis (runny nose), and to reduce excess saliva production.

HOW should this medicine be used?

Hyoscyamine comes as a tablet, an extended-release (long-acting) capsule, and a liquid to take by mouth. The tablets and liquid are usually taken three or four times a day. The extended-release capsules are usually taken twice a day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take hyoscyamine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Swallow the extended-release tablets whole; do not split, chew, or crush them.

Hyoscyamine controls symptoms associated with disorders of the GI tract, but it does not cure the disorders. Continue to take hyoscyamine even if you feel well. Do not stop taking hyoscyamine without talking to your doctor.

Are there OTHER USES for this medicine?

This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.

What SPECIAL PRECAUTIONS should I follow?

Before taking hyoscyamine,

• tell your doctor and pharmacist if you are allergic to hyoscyamine, any other medications, or any of the ingredients in hyoscyamine tablets, capsules, or liquid. Ask your doctor or pharmacist for a list of the ingredients.
• tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking pr plan to take. Be sure to mention any of the following: amantadine (Symadine, Symmetrel), amitriptyline (Elavil), chlorpromazine (Thorazine), clomipramine (Anafranil), desipramine (Norpramin), doxepin (Sinequan), fluphenazine (Prolixin), haloperidol (Haldol), imipramine (Tofranil), medications containing belladonna (Donnatal), mesoridazine (Serentil), nortriptyline (Pamelor), perphenazine (Trilafon), phenelzine (Nardil), prochlorperazine (Compazine), promazine (Sparine), promethazine (Phenergan), protriptyline (Vivactil), thioridazine (Mellaril), tranylcypromine (Parnate), trifluoperazine (Stelazine), triflupromazine (Vesprin), trimeprazine (Temaril), and trimipramine (Surmontil). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
• be aware that antacids may interfere with hyoscyamine, making it less effective. Take hyoscyamine 1 hour before or 2 hours after antacids.
• tell your doctor if you have or have ever had glaucoma; heart, lung, liver, or kidney disease; a urinary tract or intestinal obstruction; an enlarged prostate; ulcerative colitis; or myasthenia gravis.
• tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking hyoscyamine, call your doctor.
• talk to your doctor about the risks and benefits of taking hyoscyamine if you are 65 years of age or older. Older adults should not usually take hyoscyamine because it is not as safe and may not be as effective as other medications that can be used to treat the same condition.
• if you are having surgery, including dental surgery, tell your doctor or dentist that you take hyoscyamine.
• you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how hyoscyamine affects you.
• ask your doctor about the safe use of alcohol during your treatment with hyoscyamine. Alcohol can make the side effects of this medication worse.

What SPECIAL DIETARY instructions should I follow?

Unless your doctor tells you otherwise, continue your normal diet.

What should I do IF I FORGET to take a dose?

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

What SIDE EFFECTS can this medicine cause?

What should I know about STORAGE and DISPOSAL of this medication?

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.

What should I do in case of OVERDOSE?

In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.

What OTHER INFORMATION should I know?

Keep all appointments with your doctor and the laboratory.

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

AHFS® Consumer Medication Information. © Copyright, The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.

Selected Revisions: September 1, 2010.